Wirelessly posted (Mozilla/5.0 (Linux; U; Android 2.1-update1; en-us; SPH-D700 Build/ECLAIR) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17)
As long as you have the stock kernal, you should be fine. Use the 1 click unroot, get the update and reroot. Or not. This update isn't major. Just seems to add samsung media hub. Doesn't fix any of the "issues" some seem to be having. A nice little fight is about to break out at the sprint forums...
http://community.sprint.com/baw/message/213524